单项选择题

I ______ housework when there was a knock at the door.

A．did
B．was doing
C．am doing
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单项选择题
What did’ the fisherman think when he got so many golden chains
A．He thought the golden chains were useless.
B．He thought he would be rich.
C．He felt terrible.
单项选择题
What does the man mean
A．He wants to sell his car.
B．He won’ t sell his car.
C．He likes his car.
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